Physics Quiz: Resistors and Capacitors

What is the formula for Ohm's Law?

• V = I * R

• V = I + R

• V = R / I

• V = I ^ R

In a circuit with a resistance of 10 ohms and a current of 2 amps, what is the voltage?

• 20 volts

• 30 volts

• 15 volts

• 5 volts

What is the formula for calculating the capacitance of a capacitor?

• C = V/Q

• C = I/R

• C = P/V

• C = Q/V

A capacitor has a charge of 5 coulombs and a voltage of 10 volts. What is its capacitance?

• 2 Farads

• 0.5 Farads

• 15 Farads

• 0.2 Farads

In a series circuit with three resistors of 4 ohms, 6 ohms, and 8 ohms, what is the total resistance?

• 12 ohms

• 10 ohms

• 18 ohms

• 20 ohms

In a parallel circuit with the same resistors as above, what is the equivalent resistance?

• 1/Req = 1/R + 1/R = R

• 1/Req = 1/R + 1/R = 2R

• 1/Req = 1/R + 1/R = 2/R

• 1/Req = 1/R + 1/R = R/2

What is the formula for calculating the RC time constant in a circuit?

• RC = R * C

• RC = R + C

• RC = R^2 + C^2

• RC = R / C

In an RC circuit with a resistance of 100 ohms and a capacitance of 0.01 farads, what is the time constant?

• 0.01

• 1

• 10

• 100

What are the two main types of capacitors?

• Metallic and Plastic

• Digital and Analog

• Aluminum and Glass

• Electrolytic and Ceramic

What are the characteristics of a ceramic capacitor?

• High instability, high cost, high losses, narrow range of capacitance values, polarized

• High stability, low cost, low losses, wide range of capacitance values, non-polarized

• Low stability, high cost, high losses, narrow range of capacitance values, polarized

• Low stability, low cost, high losses, narrow range of capacitance values, polarized