BASIC ELECTRICAL PRACTICE - Practice Mode

1) What is the resistance of Light Dependent Resistor (LDR), if the intensity of light is increased?

Increases Decreases Remains same Becomes infinity

Correct Answer: Decreases

2) Which formula is used to calculate the power of a DC circuit?

Voltage x time Current x voltage Current x resistance Voltage x resistance

Correct Answer: Current x voltage

3) Calculate the hot resistance of 200W / 250V rated lamp.

31.25 Ohm 62.5 Ohm 312.5 Ohm 625 Ohm

Correct Answer: 312.5 Ohm

4) What is the value of resistance in an open circuit?

Zero Low High Infinity

Correct Answer: Infinity

5) Which resistor the lowest current flows in a parallel circuit having the values of 50 Ohm, 220 Ohm, 450 Ohm and 560 Ohm connected with supply?

50 Ohm 220 Ohm 450 Ohm 560 Ohm

Correct Answer: 560 Ohm

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