Question

Calculate the current in a wire of 1000 C if charge is passed through it in 5 minutes.
(Ans. 3.
An electric bulb uses 20 A when connected to 220 V. What is its resistance? Ans.​

Answer 1

Answer:

${\huge{\mathbb{\green{solution}}}}$

Current= Q/T

1) Here Q is the charge = 1000 C

And, T is the time = 5 minutes

But SI unit for time is second.

So, we will convert 5 min is second.

1 minute = 60 seconds

So, 5 min = 5*60

= 300 sec

Current= 1000/300

= 3.3 Ampere

Thus, the current flown in the wire of 1000 C in 5 min is 3.3 ampere.

2) Resistance= V/I

Here V is potential difference= 220 V

I current= 20

Resistance = 220/20

= 11 ohms

Thus, the resistance is 11 ohms.

Explanation:

$hope \: its \: helpful$

MARK BRAINALIEST ❤️

Answer 2

$\sf\blue\bigstar$Current=$\frac{Q}{T}$

1) Here Q is the charge = 1000 C

$\sf\blue\bigstar$And, T is the time = 5 minutes

$\sf\blue\bigstar$But SI unit for time is second.

$\sf\blue\bigstar$So, we will convert 5 min is second.

$\sf\blue\bigstar$1 minute = 60 seconds

$\sf\blue\bigstar$So, 5 min = 5*60

= 300 sec

$\sf\blue\bigstar$Current= $\frac{1000}{300}$

= 3.3 Ampere

$\tt\implies$Thus, the current flown in the wire of 1000 C in 5 min is 3.3 ampere.

2) Resistance= $\frac{V}{I}$

$\sf\blue\bigstar$Here V is potential difference= 220 V

$\sf\blue\bigstar$I current= 20

$\sf\blue\bigstar$Resistance = $\frac{220}{20}$

= 11 ohms

$\tt\implies$Thus, the resistance is 11 ohms.