electric circuit - resistance

What does Ohm’s Law state?

Voltage (V) = Current (I) × Resistance (R)

What is the formula for power in an electric circuit?

Power (P) = Current (I) × Voltage (V)

How is total resistance calculated for resistors in series?

Total resistance = R1 + R2 + ...

What is true about resistors in parallel?

Total resistance is less than the smallest resistor and voltage is the same across each resistor.

What does a voltmeter measure?

A voltmeter measures voltage across a component and is connected in parallel.

What does an ammeter measure?

An ammeter measures current through a component and must be connected in series.

What is the behavior of a Light Dependent Resistor (LDR) in light?

Resistance decreases as light intensity increases.

What is the main use of a thermistor?

To control current based on temperature changes.

What type of current flows only in one direction?

Direct Current (DC).

How does the number of resistors in series affect total resistance?

Increasing the number of resistors in series increases the total resistance.

If light decreases in an LDR circuit, what happens to the current?

The current decreases because resistance increases.

How do you calculate current using Ohm's Law?

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

What happens to the current in a circuit with a thermistor when temperature decreases?

The current decreases because resistance increases.

In a series circuit, how relates the total voltage and individual voltages?

The sum of individual voltages equals the total voltage of the power supply.

What happens to the current when resistance decreases in a circuit?

The current increases.