mod 18 open note flashcard SHORTER

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) of the conductor. It is expressed as V = I × R.

Front

What is the unit of resistance?

Back

The unit of resistance is the Ohm (Ω).

Front

How do you calculate total resistance in a series circuit?

Back

In a series circuit, the total resistance (R_total) is the sum of the individual resistances: R_total = R1 + R2 + R3 + ...

Front

How do you calculate total resistance in a parallel circuit?

Back

In a parallel circuit, the total resistance (R_total) can be calculated using the formula: 1/R_total = 1/R1 + 1/R2 + 1/R3 + ...

Front

What happens to the total current in a parallel circuit?

Back

In a parallel circuit, the total current (I_total) is the sum of the currents through each parallel branch: I_total = I1 + I2 + I3 + ...

Front

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

Back

The relationship is defined by Ohm's Law: V = I × R, where V is voltage, I is current, and R is resistance.

Front

What is the effect of adding more resistors in parallel?

Back

Adding more resistors in parallel decreases the total resistance of the circuit.

Front

What is the effect of adding more resistors in series?

Back

Adding more resistors in series increases the total resistance of the circuit.

Front

What is the formula for calculating power in an electrical circuit?

Back

Power (P) can be calculated using the formula: P = V × I, where P is power, V is voltage, and I is current.

Front

What is the unit of power?

Back

The unit of power is the Watt (W).