Permanent magnets are made from _____.

1. 1. Dielectric substances
   2. Diamagnetic substances
   3. Paramagnetic substances
   4. Ferromagnetic substances

Coper wires are generally used for electrical power transmission instead of iron wires because _____.

1. 1. Copper is cheaper than iron
   2. Copper is a better conductor than iron
   3. Copper is lighter than iron
   4. Copper can take higher power than iron

Which of the following instruments may be use to measure A.C?

1. 1. Hot-wire ammeter
   2. Moving coil galvanometer
   3. Galvanometer
   4. None of these

Which one of the following is not an advantage of AC over DC?

1. 1. In AC the magnitude of current can be reduced by a choke
   2. In AC a wide range of voltage s is possible
   3. Lines loss in AC transmission lines are negligible
   4. The AC sows skin effect

A car is running on a road at a uniform speed of 60 km/hr. The net resultant force on the car is_____.

1. 1. Equal to zero
   2. Driving force in the direction of car’s motion
   3. An inclined force
   4. resistance force opposite to the direction of car’s motion

The two parallel wires carrying current in the opposite direction _____.

1. 1. Do not exert any force on each other
   2. Repeal each other
   3. Attract each other
   4. None of these

All the following statements are correct, except _____.

1. 1. The presences of moisture in the air reduces the conductivity of charge
   2. A body is said to be negatively charged when it has got some electrons
   3. When a body is charged positively, some electrons escape from it
   4. Noe of the above statements is correct

Condenser is used _____.

1. 1. To change the direction of current
   2. To collect the charge
   3. to produce charge
   4. As a good conductor of electricity

Which of the following is true for capacitors in series?

1. 1. The total charge is the sum of the charges on each capacitor
   2. The total capacitance is the sum of the individual capacitance
   3. The total voltage is the sum of the voltage across each capacitor
   4. The available charge is shared between two or more capacitors

The needle of a magnetic compass _____.

1. 1. Aligns itself parallel to a magnetic field
   2. Is affected only by permanent magnetics
   3. Aligns itself perpendicular to a magnetic field
   4. Rotates in the magnetic field of an electric current