5H [2] - Circuits Cont - Physics

Front

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

Back

R_total = R1 + R2 + R3 + ... + Rn

Front

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

Back

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

Front

Define 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). It can be expressed as V = I * R.

Front

What is the unit of resistance?

Back

Ohm (Ω)

Front

If a circuit has a total resistance of 100Ω and a current of 2A, what is the voltage?

Back

V = I * R = 2A * 100Ω = 200V

Front

What happens to the total resistance in a series circuit when more resistors are added?

Back

The total resistance increases.

Front

What happens to the total resistance in a parallel circuit when more resistors are added?

Back

The total resistance decreases.

Front

How do you calculate the current flowing through a circuit?

Back

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

Front

What is the relationship between voltage, current, and resistance in a circuit?

Back

Voltage (V) is equal to the product of current (I) and resistance (R): V = I * R.

Front

If a 6Ω resistor has a current of 8A flowing through it, what is the voltage across the resistor?

Back

V = I * R = 8A * 6Ω = 48V