Question

4. How are the electric charge, electric current, and time related to each other?
5. Name the instruments used for measuring (a) current, (b) potential difference, so
6. What is the name of physical quantity which is equal to V/I?​

Answer 1

4. I =Q/t according to this formula they are related to each other

5.Current -Ammeter

PD- Voltmeter

6.PD

Answer 2

$\huge\text{\underline{Answer}}$

The electric charge and electric current and time are related by a formula :-

$\boxed{\sf{ I = Q × T }}$

Where,I is current

Q is electric charge

T is time.

2) The instrument which is used to measure the current in circuit is $\bold\red{Ammeter }$

It is an instrument which is used to measure the electric current in a circuit. It is always connected in seris. It's resistance is negligible.

The instrument which is used to measure potential difference is

$\bold{Voltmeter}$

It is an instrument which is used to measure potential difference between two points in an electric circuit. It is connected in parallel. Its resistance is infinity.

3)The physical quantity which is equal to the ratio of voltage and current is $\bold{Resistance}$

Resistance :- The property of a conductor to resist the flow of current through it is called resistance.

$\boxed{\sf{r = \frac{v}{i} }}$