Question

A circuit is constructed with five resistors and a battery as shown. The battery voltage is V = 12 V. The values for the resistors are: R₁ = 64 Ω, R₂ = 110 Ω, R₃ = 131 Ω, and R₄ = 135 Ω. The value for R_X is unknown, but it is known that I₄, the current that flows through resistor R₄, is zero.

1)

What is I₁, the magnitude of the current that flows through the resistor R₁?

A

2)

What is V₂, the magnitude of the voltage across the resistor R₂?

V

3)

What is I₂, the magnitude of the current that flows through the resistor R₂?

A

4)

What is R_X, the value of the unknown resistor R_X?

Ω

5)

What is V₁, the magnitude of the voltage across the resistor R₁?

V

6)

If the value of the resistor R₂ were doubled, how would the value of the resistor R₃ have to change in order to keep the current through R₄ equal to zero?

R₃ would need to be increased

R₃ would need to be decreased

R₃ would not need to be changed

There is no change that could be made to R₃ to keep the current through R₄ equal to zero.

Answer 1