Electrical Theory 1

Front

In a series circuit, what stays the same?

Back

Amperage

Front

What is the opposition to electrical flow called?

Back

Resistance

Front

If a parallel circuit has 2 branches, each with 20 ohms, what is the total resistance?

Back

10 ohms

Front

Which of the following is not a good insulator: glass, rubber, tin, plastic?

Back

Tin

Front

Amps are a measurement of electrical _______________.

Back

Current

Front

What is the unit of electrical resistance?

Back

Ohm

Front

What is the formula for calculating total resistance in a series circuit?

Back

R_total = R1 + R2 + R3 + ...

Front

What is the formula for calculating total resistance in a parallel circuit?

Back

1/R_total = 1/R1 + 1/R2 + 1/R3 + ...

Front

What does a voltmeter measure?

Back

Voltage

Front

What is the relationship between voltage, current, and resistance called?

Back

Ohm's Law (V = I * R)