Physics Mcqs

Why should a resistance be introduced in a circuit in series deliberately ?

• (A)  to increase current
• (B)  to decrease current
• (C)  to control current
• (D)  just to give a good look to circuit

Answer

Submitted By :Ali Uppal

If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be_______________?

• (A)  3600C
• (B)  7200C
• (C)  1C
• (D)  2C

Answer

Submitted By :Ali Uppal

Which one of the following materials is useful for making bulb filaments ?

• (A)  constantan
• (B)  nichrome
• (C)  copper
• (D)  tungsten

Answer

Submitted By :Ali Uppal

In the following figure, the terminal potential is ___________________ ?

• (A)  zero
• (B)  2V
• (C)  12V
• (D)  36V

Answer

Submitted By :Ali Uppal

Specific resistance of a wire____________________?

• (A)  will depend on its length
• (B)  will depend on its radius
• (C)  will depend on the type of material of the wire
• (D)  will depend on none of the above

Answer

Submitted By :Ali Uppal

There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?

• (A)  100W
• (B)  200W
• (C)  60W
• (D)  all

Answer

Submitted By :Ali Uppal

Circuit which gives continuously varying potential is called _______________________?

• (A)  complex network
• (B)  wheat stone bridge
• (C)  potential divider
• (D)  all of above

Answer

Submitted By :Ali Uppal

Reciprocal of resistivity is called__________________?

• (A)  resistance
• (B)  inductance
• (C)  conductivity
• (D)  flexibility

Answer

Submitted By :Ali Uppal

Resistance of an ideal insulator is __________________?

• (A)  infinite
• (B)  zero
• (C)  finite
• (D)  depends upon nature

Answer

Submitted By :Ali Uppal

An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?

• (A)  2KWh
• (B)  20KWh
• (C)  6KWh
• (D)  12KWh

Answer

Submitted By :Ali Uppal