a.

5A

b.

B.

(1.0 amps)

The total resistance in the circuit above may be calculated by using

the formula

Rt = R1 + R2 + R3

= 10 ohms + 10 ohms + 5 ohms

Rt = 25 ohms

The total resistance in the circuit above may also be calculated by

using the formula derived from Ohm's law:

Rt = Et

It

= 100 volts

4 amps

Rt = 25 ohms

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