Resistors

Four resistors in series 5ohms, 10ohms, 5ohms, 20ohms

Total resistance is -

• 5 ohms

• 30 ohms

• 40 ohms

• 50 ohms

Resistors in series 5ohms, 5ohms, 5ohms

What is the total resistance

• 15ohms

• 20ohms

• 5ohms

• 30ohms

Resistors in parallel - 5ohms, 5ohms, 5ohms

which is the correct formula?

• Rt = 1/R1 + 1/R2 + 1/R3

• 1/Rt = 1/R1 + 1/R2 + 1/R3

• Rt = 1/R1 x 1/R2 x 1/R3

• 1/Rt = R1 + R2 + R3

Resistors in parallel, 5ohms, 5ohms, 5ohms

total resistance is

• 5 + 5 + 5 = 15 ohms

• 1/5 + 1/5 + 1/5 = 3/5 ohms

• 1/5 + 1/5 + 1/5 = 3/5 flipped = 5/3 ohms

• 1/5 + 1/5 + 1/5 = 3/15 ohms

2 resistors in parallel 4ohms and 8ohms, the total resistance will be

• less than 4ohms

• more than 4ohms

• more than 8ohms

• less than 1ohm

what is the total resistance of the circuit above?

• 8ohms

• 9ohms

• 4ohms

• 2ohms

what is the total resistance of this circuit?

• 5.5 ohms

• 6.5 ohms

• 2.5 ohms

• 4.5 ohms

If a circuit has 10 ohms resistance and 100 volts, what will the current be?

• 10 amps

• 100 amps

• 1000 amps

• 1 amp

If a circuit has 200 volts and total resistance is 20 ohms, what will the current be?

• 20 amps

• 30 amps

• 10 amps

• 50 amps

If a circuit of 400 volts with a current of 10 amps, what will the power be?

• 400 watts

• 40 watts

• 40,000 watts

• 4000 watts