WorksheetsG7 Q4 IA MENSURATION OHMS LAW
Total questions: 44
Worksheet time: 22mins
What is the significance of Ohm's Law?
It defines the relationship between voltage, current, and resistance.
It measures the speed of light.
It calculates gravitational force.
It explains the theory of relativity.
Which instrument is used to measure electrical current?
Voltmeter
Ammeter
Ohmmeter
Thermometer
What does a voltmeter measure?
Resistance
Current
Voltage
Temperature
What is mensuration in electricity?
Measurement of electrical quantities
Calculation of area and volume
Study of sound waves
Analysis of chemical reactions
What does mensuration refer to in the context of electrical quantities?
Measuring electrical quantities like voltage, resistance, and current
Calculating the area of geometric shapes
Estimating the weight of objects
Determining the speed of light
Why is mensuration important in electrical circuits?
It helps in designing new circuits
It ensures accurate circuit functioning and troubleshooting
It increases the speed of electrical signals
It reduces the cost of electrical components
What is the definition of voltage?
The speed of electrons in a circuit
The electrical potential difference between two points in a circuit
The resistance to the flow of current
The amount of current flowing through a circuit
What is the unit of measurement for voltage?
Amperes (A)
Volts (V)
Ohms (Ω)
Watts (W)
Which instrument is used to measure voltage?
Ammeter
Thermometer
Voltmeter
Barometer
The formula for voltage is (a) .
What is the definition of current?
The resistance in a circuit
The flow of electric charge in a circuit
The voltage across a circuit
The power used in a circuit
What is the unit of measurement for current?
Volts (V)
Ohms (Ω)
Amperes (A)
Watts (W)
Which instrument is used to measure current?
Voltmeter
Ammeter
Thermometer
Barometer
Resistance in an electric circuit is (a) to the flow of electric current.
Match the following units of measurement with their corresponding physical quantities.
Volts (V)
Electrical Potential
Amperes (A)
Electric Current
Ohms (Ω)
Resistance
Watts (W)
Power
Which instrument is used to measure resistance?
Voltmeter
Ammeter
Ohmmeter
Thermometer
What is the formula for calculating resistance?
R = I / V
R = V / I
R = V * I
R = I * V
What does Ohm's Law state about the relationship between current, voltage, and resistance?
Current is inversely proportional to voltage and directly proportional to resistance.
Current is directly proportional to voltage and inversely proportional to resistance.
Current is directly proportional to both voltage and resistance.
Current is inversely proportional to both voltage and resistance.
What is the formula for Ohm's Law?
V = I + R
V = I / R
V = I × R
V = R / I
What is the formula to calculate current (I) using Ohm's Law?
I = V/R
I = R/V
I = V*R
I = R*V
In Ohm's Law, what is the unit of measurement for resistance (R)?
Volts (V)
Amperes (A)
Ohms (Ω)
Watts (W)
According to Ohm's Law, how is resistance (R) calculated?
R = I/V
R = V/I
R = V*I
R = I*V
What is the unit of measurement for current (I) in Ohm's Law?
Volts (V)
Amperes (A)
Ohms (Ω)
Joules (J)
What is the current (I) when the voltage (V) is 12V and the resistance (R) is 6Ω?
2A
3A
4A
6A
What is the voltage (V) when the current (I) is 3A and the resistance (R) is 4Ω?
12V
10V
8V
6V
The instrument used to measure voltage across components is (a) .
What does an ammeter measure?
Voltage
Resistance
Current
Temperature
Which device measures the resistance of a circuit or component?
Voltmeter
Ammeter
Ohmmeter
Barometer
What is the first step in measuring voltage using a voltmeter?
Connect the probes across the circuit component.
Set the voltmeter to the correct voltage range.
Read the voltage on the display.
Turn off the power supply.
What should you do after setting the voltmeter to the correct voltage range?
Read the voltage on the display.
Turn off the voltmeter.
Connect the probes across the circuit component.
Adjust the voltage range again.
Match the following steps with their corresponding actions in measuring voltage with a voltmeter.
Set the voltmeter to the correct voltage range.
Adjust the device to the appropriate setting.
Connect the probes across the circuit component.
Attach the leads to the component being tested.
Read the voltage on the display.
Observe the measurement shown on the screen.
Turn off the circuit.
Power down the electrical system.
What is the first step in measuring current using an ammeter?
Connect the probes in series with the circuit.
Set the ammeter to the correct current range.
Read the current on the display.
Connect the probes in parallel with the circuit.
How should the probes be connected when measuring current?
In parallel with the circuit.
In series with the circuit.
Directly to the power source.
Not connected at all.
What is the final step in the process of measuring current?
Set the ammeter to the correct current range.
Connect the probes in series with the circuit.
Read the current on the display.
Turn off the power supply.
What is the first step in measuring resistance according to the document?
Set the ohmmeter to the correct resistance range.
Connect the probes across the component.
Disconnect power from the circuit.
Read the resistance on the display.
What should you do after setting the ohmmeter to the correct resistance range?
Disconnect power from the circuit.
Connect the probes across the component.
Read the resistance on the display.
Turn off the ohmmeter.
What is the final step in the resistance measurement process?
Set the ohmmeter to the correct resistance range.
Disconnect power from the circuit.
Connect the probes across the component.
Read the resistance on the display.
A circuit has a voltage of 24V and resistance of 8Ω. What is the current?
3A
4A
5A
6A
A circuit has a current of 5A and resistance of 10Ω. What is the voltage?
40V
50V
60V
70V
A circuit has a voltage of 30V and current of 6A. What is the resistance?
3Ω
4Ω
5Ω
6Ω
Which of the following are fundamental electrical properties? Voltage, resistance, and current are examples of (a) .
What law helps in understanding and calculating electrical properties?
Newton's Law
Ohm's Law
Boyle's Law
Kepler's Law
What ensures accuracy when measuring electrical properties?
Using proper measuring instruments
Estimating values
Guessing measurements
Ignoring errors
What is suggested as the next step in learning about electrical applications?
Memorize definitions
Practice more problems and explore real-world applications
Ignore practical applications
Focus only on theory
