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If two capacitors C1 and C2 are connected in series. Then the value of effective
capacitance should be

A) Greater than C1 and C2 B) Less than C1 and C2
C) Greater than C1 but less than C2 D) In between C1 and C2

From the given statements choose the correct one which are related to law of
resistance ?

|. Resistance is directly proportional to length of material.
ll. Resistance is inversely proportional to area of cross section.
Ill. Resistance depends on the nature of material.
A) ۷ 8) | and Il only C) |, land Ill D) ॥ only

If the length and area of a material is doubled then change in resistance of material is
A) Resistance is doubled B) Resistance halved
C) Resistance remains the same D) Resistance become 4 times of initial value

Choose the material with positive temperature coefficient of resistance.
A) Silicon B) Carbon C) Copper D) Germanium

Two lamps each of rating 100 Watt and 200 Volt which are connected in series.
Find effective resistance of the circuit.

A) 50 ohm B) 100 ohm C) 400 ohm D) 800 ohm

If 20 ohm and 30 ohm resistor are connected in series across 200 volt supply.
Find voltage drop across 30 ohm resistor.

A) 200 volt B) 120 volt C) 80 volt D) 100 volt

From the following find out the reason for buckling effect in cells.
1. Over charging.
Il. Continuous operation of battery in discharge.
Ill. Non-uniform distribution of current in plates.
A) | andIl B) l only C) ll only D) I, Il and Ill

Electroplating is based on
A) Heating effect of electricity B) Chemical effect of electricity
C) Physical effect of electricity D) Magnetic effect of electricity