Physics GK · all questions

Electricity and Magnetism
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

524

Questions

11/27

Page

Pick an option on a question to see the right answer and solution.

Q201

If 4 resistances of

\frac{1}{4} Ω

are connected in series order then how much the maximum resistance may be obtained?

Select an option to see the answer and solution.

Q202

In an electrical circuit diagram the symbol of a cell consists of a long and a short vertical line. Its a long vertical line represent . . . . . . . . terminal.

Select an option to see the answer and solution.

Q203

If the potential difference between the ends of a conductor is doubled, what will be the effect on the current flowing in it?

Select an option to see the answer and solution.

Q204

Which of the following metals is used as filament in lighting bulbs?

Select an option to see the answer and solution.

Q205

In step-down transformer, the AC output gives the

Select an option to see the answer and solution.

Q206

Step-up transformers are used for

Select an option to see the answer and solution.

Q207

If two Coulomb of charge flows the cross-section of a conductor is one second, what will be the current flowing there?

Select an option to see the answer and solution.

Q208

Insulators have resistivity of the order of

Select an option to see the answer and solution.

Q209

How much work is done in moving a charge of 5C across two points having a potential difference of 14V?

Select an option to see the answer and solution.

Q210

Which of the following effects is not caused by electricity?

Select an option to see the answer and solution.

Q211

Which of the following statements regarding electric motors is incorrect?

Select an option to see the answer and solution.

Q212

Which direction does the thumb represent in Fleming's right hand rule?

Select an option to see the answer and solution.

Q213

Kilowatt Hour (kWh) represents the unit of which of the following?

Select an option to see the answer and solution.

Q214

Which of the following is measured in the unit called Gauss?

Select an option to see the answer and solution.

Q215

If electric charge flows through any point of a circuit in 1 second is 20 coulombs. Find the value of electric current flowing through it-

Select an option to see the answer and solution.

Q216

A fuse protects an electric circuit from

Select an option to see the answer and solution.

Q217

How much current an electric heater coil will drawn from a source of 220 V. If the resistance of the coil is 100 ohms?

Select an option to see the answer and solution.

Q218

A fuse wire is made of an alloy of

Select an option to see the answer and solution.

Q219

An electric bulb of 60 W is used 6 h per day. Calculate the energy used by the bulb in one day.

Select an option to see the answer and solution.

Q220

The potential difference between the terminals of an electric heater is 60V when it draw of current of 4A from the source. What current will the heater draw if the potential difference is increased to 157.5 V?

Select an option to see the answer and solution.

Prev 9 10 11 12 13 Next