Lesson 1: How Current Reacts in DC Parallel Circuits

If two 6-volt sources are connected in parallel to supply a 24-ohm load and the total current is 0.25 A, how much current would each source supply to the load? (Round the FINAL answer to three decimal places.)

.125 A

If two 6-volt sources are connected in parallel to supply a 24-ohm load, how much current will flow in the circuit? (Round the FINAL answer to two decimal places.)

.25 A

Calculate the branch current which would be shown on Ammeter M2 in the circuit.

10 A

If a circuit has three branches with branch currents of 10 amps, 5 amps, and 12.5 amps, what would be the total circuit current? (Round the FINAL answer to one decimal place.)

27.5 A

In this circuit, two - 47-ohm load resistors are connected in parallel with a 12-volt supply. What is the total number of 47-ohm resistors (including the first two) that can be connected without blowing the 2-amp fuse?

7 Resistors

Adding parallel loads to a circuit will increase total circuit resistance and increase the total circuit current.

False

Branch currents in a parallel circuit are always greater than total current.

False

If all lamps draw the same amount of current, closing the switch on Lamp 3 will add 1 amp of current to the circuit.

Note: The total current in a parallel circuit is the sum of all branches. The correct answer is 'True'.

A circuit has a 24-volt supply and four identical resistors in parallel. If the total equivalent circuit resistance is 5 ohms, what is the current in each branch of the circuit? (Round the FINAL answer to one decimal place.)

The correct answer is: 1.2 A

What is the total resistance for the circuit?

The correct answer is: 20 Ω

A break in any branch of a parallel circuit will cause a decrease in the total current of the circuit.

True

What fraction of the total current that is supplied to the load would be provided by each of four equal rated batteries connected in parallel to the load?

b. 1/4

In a parallel circuit with a single power source, the current that leaves and re-enters the power source is called the ? .

d. total current

What is the formula for finding total current in a parallel circuit when branch currents are known?

iT = i1+ i2+ i3 + in....

What formula is used to find total current in a parallel circuit when the total resistance and applied voltage of that circuit are known?

iT= ET/RT