APP2 Circuits

Front

What happens to the current in a circuit as resistance increases?

Back

The current decreases.

Front

What is the formula to calculate current (I) in a circuit with a resistor (R) and voltage (V)?

Back

I = V / R

Front

What is the current in a wire attached to a 3.5 W resistor with a 9 V battery?

Back

2.6 A

Front

How is the total resistance of resistors in parallel calculated?

Back

Using the inverses of the individual resistances.

Front

Why do resistors in parallel have a lower total resistance than the smallest individual resistor?

Back

Current flows through them simultaneously, increasing the overall cross-sectional area.

Front

How is the total resistance of resistors in series calculated?

Back

It is the sum of the individual resistances.

Front

Why do resistors in series have a higher total resistance than the largest individual resistor?

Back

Current flows through them sequentially, increasing the overall length.

Front

What is Ohm's Law?

Back

V = I * R, where V is voltage, I is current, and R is resistance.

Front

What is the unit of resistance?

Back

Ohm (Ω)

Front

What is the equivalent resistance of two resistors in series, R1 and R2?

Back

R_total = R1 + R2