BASIC ELECTRICAL PRACTICE - Quiz

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

Increases Decreases Remains same Becomes infinity

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

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

31.25 Ohm 62.5 Ohm 312.5 Ohm 625 Ohm

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

Zero Low High 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