How many electrons are present in one coulomb? - Physics

Question

How many electrons are present in one coulomb?

One Line Answer

Solution

Q = ne
N = Q/e = 1C / 1.6 x 10^-19 = 6.25 x 10¹⁸

shaalaa.com

Types of Circuits: Simple Circuit

Is there an error in this question or solution?

Q 12 Q 11 Q 13

Chapter 8: Electricity and Magnetism - Static Electricity [Page 300]

APPEARS IN

Frank Physics [English] Class 9 ICSE

Chapter 8 Electricity and Magnetism
Static Electricity | Q 12 | Page 300

RELATED QUESTIONS

What transformation of energy takes place when current is drawn from a cell?

‘The potential difference between two conductors is 1 volt.’ Explain the meaning of this statement.

How electric current flows in liquids?

What do you understand by the term electric resistance?

Which is bigger: 1 C or magnitude of the charge on an electron?

The following figure shows a metal rod PQ mounted on an insulated stand. The cap of an uncharged electroscope touches one end Q of the metal rod. A negatively charged ebonite rod is brought near the other end P of the metal rod.

(a) What charge does the end P have?
(b) What charge does the end Q have?
(c) What charge does the cap of the electroscope have?
(d) What charge does the gold leaf have?
(e) Will the leaf diverge or collapse? Give reason.
(f) If the electroscope is now earthed, what charge does the metal rod have?

Write SI unit of
Resistance.

How many electrons are present in Na⁺? The atomic number of Na is 11.

Write two differences between the primary and secondary cells.

What is the effect of temperature on the resistance of a wire?