Current Electricity: Concept of Charge

What determines the quantity of charge on a body?

What is the charge on 1 electron?

What is the SI unit of electric current?

What constitutes electric current?

In a non-conductor (insulator), where does the charge reside?

What constitutes the flow of current in metals?

What is the formula for calculating the current in the direction of motion of cations in an electrolyte?

What is the cause and deciding factor of the flow of current?

What is the unit of electric potential?

What happens when two like charges are brought near each other?

What is the cause of resistance in a conductor?

What happens when a potential difference is applied to a metal wire?

In Ohm's law, what does 'V' stand for?

What is defined as the amount of work done per unit charge in bringing a positive test charge from infinity to a point?

Potential at a point is defined as the amount of work done per unit charge in bringing a positive test charge from infinity to that ______

The SI unit of electric potential is ______

In a conductor, resistance is the obstruction offered to the flow of ______

The cause of resistance in a conductor is the loss of electrons from its outer ______

When two like charges are brought near each other, work must be done to move charge A against the repulsive force on it due to charge ______

The unit of electric potential is the ______

In a conductor, when a potential difference is applied, electrons experience a force and begin to ______

The flow of current in metals is caused by the movement of ______

The potential at a point is said to be 1 volt when 1 joule of work is done in bringing 1 coulomb charge from infinity to that ______

The direction of flow of current is a deciding factor in the flow of ______

Charge on 1 electron = – 1.6 x 10-19 C 1 Coulomb = 𝟏 𝟏.𝟔 𝒙 𝟏𝟎𝟏𝟗 = 6.25 x 1018 electrons 4. In a non-conductor (insulator) → charge resides at a point, where there is an excess / deficit of electrons → static charge: do not flow - In a conductor like metal → large no. of free electrons in it → charges flow CONCEPT OF CURRENT: Charge in motion → constitutes: Electric ______

Current → rate of flow of ______ Amt. of ______ flowing across cross-section of a conductor → per unit time 2. Denoted by → I / I not unit CS 3. Scalar Quantity → denotes: flow of ______ is in opposite direction **Direction of current in conductor; do not follow vector algebra If ______ Q → flows through cross-section (normal to dir. of motion) in time t, 𝑄 I= 𝑡 Unit: 1. SI unit → C s-1: ampere (A) **French physicist Andre Ampere 2. 1 Ampere → amt. of current flowing in a conductor, when 1 coulomb Charge 6 x 1018 e- passes in 1 second **irrespective of SA Flow of

SI unit → C s-1: ampere (A) **French physicist Andre Ampere 2. 1 Ampere → amt. of ______ flowing in a conductor, when 1 coulomb Charge 6 x 1018 e- passes in 1 second **irrespective of SA Flow of ______: 1. Metals: moving charges are free electrons → constitute the

In a conductor like metal → large no. of free electrons in it → charges

Charge in motion → constitutes: Electric

Flow of