Understanding Potential Divider Circuits

What happens to the resistance of a light-dependent resistor (LDR) when the light intensity increases?

• The resistance becomes zero.

• The resistance increases.

• The resistance decreases.

• The resistance remains constant.

Where is the output voltage placed in a potential divider circuit with an LDR?

• Across the power supply

• Across the LDR

• Across the entire circuit

• Across the fixed resistor

In bright light conditions, what is the calculated output voltage across the fixed resistor if the EMF is 10 volts and the fixed resistor is 500 ohms?

• 3.5 volts

• 10.0 volts

• 7.1 volts

• 5.0 volts

What is the resistance of the LDR in very bright light conditions?

• 200 ohms

• 500 ohms

• 20,000 ohms

• 2,000 ohms

How can the output voltage be varied in a potential divider circuit?

• By adding more LDRs

• By using a variable resistor

• By increasing the circuit length

• By changing the power supply