ELE 100 Quiz #4 Solutions

A 120 ohms and a 40 ohms resister are in parallel. What is the equivalent resistance?

30 ohms

What happens to total resistance in a circuit with parallel resistors if one of them opens?

It increases

A parallel circuit differs from a series circuit in that a parallel circuit has ____________.

More than one path for current flow

The voltage across any branch of a parallel circuit is ___________.

The same as the other parallel elements

If the first resistor opens in the circuit of problem #1 (42 mA and 128mA), what will the total current be?

128 mA

What is the total current in the circuit shown here? (42 mA & 128mA)

170 mA

What is the total resistance of the circuit shown below? (20 V, 10 ohms, 10 ohms, 10 ohms, and 10 ohms)

2.5 ohms

What determines if resistor connections are in series, parallel or series-parallel?

Current flow

As additional resistors are connected to a parallel circuit, the total resistance will _________.

Decrease

T/F? The total resistance in a parallel circuit is always greater than the lowest-value branch resistor.

False