Question

please help in this question no. 17​

Answer 1

Answer:

On the outline map of India locate and label any THREE of the following with 3

suitable symbols.

a. Raja Sansi International airport

b. Indra Gandhi International airport

c. Chhatrapati Shivaji International airport

d. Meenam Bakkam Iinternational airport

e. Netaji Subhash Chandra Bose International airport

Answer 2

Given :

Two resistances of 6Ω are connected in parallel across a battery of 2V (internal resistance r).

Current flow in the circuit = 0.5A

To Find :

Internal resistance of the cell.

Solution :

❖ First of all we need to calculate equivalent resistance of the circuit.

As per ohm's law current flow through conductor is directly proportional to the applied voltage$.$

• V = I R

» V denotes voltage

» R denotes resistance

» I denotes current

By substituting the given values;

➙ 2 = 0.5 × R

➙ R = 2/0.5

➙ R = 4 Ω [Equivalent resistance]

♦ Two resistances of 6Ω are connected in parallel. Hence their equivalent will be 6/2 = 3Ω.

Finally 6Ω and r come in series.

Net equivalent resistance :

➙ R = 3 + r

➙ 4 = 3 + r

➙ r = 4 - 3

➙ r = 1 Ω