1. Bulbs in street lighting are all connected in ?

parallel

series

series-parallel

end-to-end

Answer: parallel

Explanation:


2. It becomes more difficult to remove ?

any electron from the orbit

first electron from the orbit

second electron from the orbit

third electron from the orbit

Answer: third electron from the orbit

Explanation:


3. ln a series circuit with unequal resistances ?

the highest resistance has the-most of the current through it

the lowest resistance bas the highest voltage drop

the lowest resistance has the highest current

the highest resistance has the highest voltage drop

Answer: the highest resistance has the highest voltage drop

Explanation:


4. Two resistors are said to be connected in series when ?

same current passes in turn through both

both carry the same value of current

total current equals the sum of branch currents

sum of IR drops equals the applied e.m.f.

Answer: same current passes in turn through both

Explanation:


5. Specific resistance of a substance is measured in ?

?/m

?/m²

?-m

m/?

Answer: ?-m

Explanation:


6. When one leg of parallel circuit is opened out the total current will ?

reduce

increase

decrease

become zero

Answer: decrease

Explanation:


7. Conductance : mho : : ?

resistance : ohm

capacitance: henry

inductance : farad

lumen : steradian

Answer: resistance : ohm

Explanation:


8. ln an electric kettle water boils in 10 minutes. It is required to boil the boiler in 5 minutes, using same supply mains ?

length of heating element should be decreased

length of heating element should be increased

length of heating element has no effect on heating if water

none of the above

Answer: length of heating element should be decreased

Explanation:


9. Varistors are ?

insulators

non-linear resistors

carbon resistors

resistors with zero temperature coefficient

Answer: non-linear resistors

Explanation:


10. Voltage dependent resistors are used ?

for inductive circuits

to suppress surges

as heating elements

as current stabilizers

Answer: to suppress surges

Explanation: