Physics, asked by Merlin123, 11 months ago

Pls answer the 18th question and explain why it is so...... Fast.....

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Kartik08989: the answer is 20 ohm

Kartik08989: because mA means 10 ki power -3

swashri27: I think 20

swashri27: yes

Kartik08989: we divide voltage by current

swashri27: 8000/400

Kartik08989: and get answer

Merlin123: Yup the answer is 20 and how you got the 8000

Kartik08989: by 8 multiply 10 ki 3

Merlin123: For what

Answers

Answered by TwilightSky

I = 0.4A

V = 8

R = V/I

= 8/0.4 = 20 ohm.

20 ohm is the resistance

Merlin123: Thanks but how you got 0.4

TwilightSky: because in the ammeter picture, the unit is given below (mA) which means milli ampere. ..hence I have converted to Ampere. 1 mA = 0.001A so 400 mA = 0.4A

TwilightSky: please mark as brainliest if this answer and explanations helped you. thanks a lot!

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