G7 Q4 IA MENSURATION OHMS LAW

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)   .

• V = I × R
• V = R / I
• V = I + R
• V = I - R