Electrical Theory 1

Front

What is the formula for calculating resistance (R) in a circuit?

Back

R = E / I, where E is voltage and I is current.

Front

What does 'Amps' measure in an electrical circuit?

Back

Amps measure electrical current.

Front

What is the relationship between voltage (E), current (I), and resistance (R)?

Back

E = I * R.

Front

What is voltage drop in a circuit?

Back

Voltage drop is the reduction in voltage across a component in a circuit.

Front

What is the unit of measurement for voltage?

Back

The unit of measurement for voltage is Volts (V).

Front

What does Ohm's Law state?

Back

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Front

What is the unit of measurement for current?

Back

The unit of measurement for current is Amperes (A).

Front

What is the unit of measurement for resistance?

Back

The unit of measurement for resistance is Ohms (Ω).

Front

If V = 18 volts and I = 2 amps, what is R?

Back

R = 9 Ohms.

Front

What is electrical power measured in?

Back

Electrical power is measured in Watts (W).