Electrical Theory 1

Front

What does resistance in a wire depend on?

Back

Resistance in a wire depends on temperature, diameter, and material, but not on insulation.

Front

Voltage is a measurement of electrical _______

Back

pressure

Front

Amps are a measurement of electrical _________________

Back

current

Front

What is the total resistance in a series circuit?

Back

The total resistance is the sum of all resistors in a series circuit.

Front

Calculate the current in a circuit with 12 volts and 4 ohms.

Back

The current is 3 amps (using Ohm's Law: I = V/R).

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). Formula: I = V/R.

Front

What is the unit of resistance?

Back

The unit of resistance is the ohm (Ω).

Front

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

Back

Voltage (V) = Current (I) x Resistance (R).

Front

What is a parallel circuit?

Back

A parallel circuit is a circuit where the components are connected across common points or junctions, providing multiple paths for the current.

Front

What happens to total resistance in a parallel circuit?

Back

In a parallel circuit, the total resistance is less than the smallest individual resistor.