There are four resistors in a circuit with an applied voltage of 120V. The voltage drops across three resistors is 15V each. What is the voltage drop across the fourth resistor?

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1. Determine the voltage across R3

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If a 75 W light bulb operates at a voltage of 120 V, what is the current in the bulb?

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Three resistors with values of 4.0 Ω, 6.0 Ω and 8.0 Ω respectively, are connected in series. What is their equivalent resistance?

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Three resistors with values of 4.0 Ω, 6.0 Ω and 10.0 Ω are connected in parallel. What is their equivalent resistance?

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According to Ohm's Law, if the current is increased, what happens to the voltage across a resistor?

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A 20 Ω and a 40 Ω resistor are connected in series across a battery. If the current is 2 A, what is the voltage of the battery?

(a)  

A 2 Ω and 12 Ω resistor are connected in parallel across a 20 V battery. What is the current through the 2 Ω resistor?

(a)  

The period of a sine wave is 10m seconds. Its frequency is

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Two waves of the same frequency have opposite phase when the phase angle between them is

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Determine the frequency of this waveform shown on an oscilloscope screen:

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As the impedance increases, the admittance

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For the circuit below, calculate the voltage at point B to D

(a)  

An 8-ohm resistor is in series with a lamp. The circuit current is 1 A with a voltage supply of 20V, determine the voltage across the lamp.

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