Electronics Review

What is Ohm's Law and how is it mathematically expressed?

• Ohm's Law is mathematically expressed as V = R / I

• Ohm's Law is mathematically expressed as V = I * R.

• Ohm's Law is mathematically expressed as R = V - I

• Ohm's Law is mathematically expressed as I = V + R

Explain the difference between series and parallel circuits.

• Series circuits have multiple paths for current, while parallel circuits have a single path.

• Series circuits are used for high voltage applications, while parallel circuits are used for low voltage applications.

• In series circuits, the voltage is divided among components, while in parallel circuits, the voltage remains the same across all components.

• Series circuits have a single path for current, while parallel circuits have multiple paths.

How do you measure voltage and current in a circuit?

• Use a multimeter for both voltage and current in parallel.

• Connect a resistor in series to measure voltage and current.

• Use a voltmeter for voltage (in parallel) and an ammeter for current (in series).

• Measure voltage with an ammeter and current with a voltmeter.

What is the method to calculate resistance in a Series circuit?

• 1/Rt = 1/R1 * 1/R2

• 1/Rt = 1/R1 + 1/R2

• Rt = R1 + R2

• Rt = R1 * R2

Potential Difference is also known as:

• Current
• Voltage
• Resistance

• Inductance

That type of current periodically reverses itself and is used over long distances with as little loss power as possible.

• Direct Current (DC)
• Static Current
• Pulsating Current
• Alternating Current (AC)

What happens to the total resistance in a parallel circuit when more resistors are added?

• The total resistance increases.

• The total resistance decreases.

• The total resistance remains the same.

• The total resistance becomes infinite.

In a series circuit, if one component fails, what happens to the rest of the circuit?

• The circuit becomes a parallel circuit.

• All components stop working.

• Only the failed component stops working.

• All components continue to function normally.

What is the unit of measurement for electrical power?

• Watts

• Volts

• Amperes

• Ohms

Determine Total Resistance

• 8 ohms

• 0.53 ohms

• 17 ohms

• 7 ohms