Understanding Light Dependent Resistors and Circuit Behavior

What happens to the resistance of an LDR in complete darkness?

• It becomes very low.

• It becomes very high.

• It remains constant.

• It fluctuates randomly.

In a transistor, what controls the current at the collector?

• The voltage at the collector.

• The current at the base.

• The resistance of the collector.

• The temperature of the transistor.

How does a potential divider share voltage between two resistors?

• Only to the resistor with lower resistance.

• Equally between both resistors.

• Only to the resistor with higher resistance.

• Based on the resistance of each resistor.

What is the effect of bright surroundings on the LDR's resistance?

• The resistance becomes very high.

• The resistance becomes very low.

• The resistance becomes infinite.

• The resistance remains unchanged.

What happens to the base voltage when the LDR's resistance is low?

• The base voltage is zero.

• The base voltage is low.

• The base voltage is high.

• The base voltage fluctuates.

When the LDR is placed below in the circuit, what happens in dark surroundings?

• The circuit stops working.

• The bulb flickers.

• The bulb remains off.

• The bulb lights up.

What is a common question regarding the function of a resistor in the circuit?

• How it decreases the resistance.

• How it prevents high current from burning the transistor.

• How it changes the light intensity.

• How it increases the voltage.

Why is a resistor used to prevent large currents in the circuit?

• To reduce the circuit's efficiency.

• To prevent the bulb from overheating.

• To increase the brightness of the bulb.

• To avoid burning the transistor.

How is the voltage across the LDR calculated in a potential divider?

• By dividing the total voltage by the LDR's resistance.

• By subtracting the LDR's resistance from the total voltage.

• By multiplying the LDR's resistance by the total voltage.

• By dividing the LDR's resistance by the sum of resistances and multiplying by the total voltage.

What is the role of the 1k ohm resistor in the circuit?

• To decrease the circuit's resistance.

• To prevent excessive current from damaging the circuit.

• To increase the circuit's voltage.

• To enhance the brightness of the bulb.