Question

A galvanometre of 100 ohm resistence coil shows 50 micro ampere whole difflex .how much resistance should be added to make
1. 50 volt voltmetre
2. 10 m a ametre​

Answer 1

Answer:

A shunt resistance (S) need to be connected to galvanometer in

parallel to convert into ammeter.

galvanometer resistance = 100

I(g) = 20 A

1 A for 100 th division.

So for 50 divisions it will be 100 A.

So we need to make ammeter of 0 - 100 A

I = 100 A

S =

(I−I(g))

I(g)×G

S =

(100−20)

20×100

S =

80

200

S = 2.5 Ohm

Answer 2

【♥】 【H】【O】【L】【A】 【M】【A】【T】【E】 【♥】₱ⱠɆ₳₴Ɇ ₥₳Ɽ₭ ł₮ ₳₴ ฿Ɽ₳ł₦ⱠłɆ₴₮!!!ᴘʟᴇᴀsᴇ ᴍᴀʀᴋ ɪᴛ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ!!!ɪ ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ʏᴏᴜ!!ᴘˡᵉᵃˢᵉ ᵐᵃʳᵏ ⁱᵗ ᵃˢ ᵇʳᵃⁱⁿˡⁱᵉˢᵗ... ɪ ⁿᵉᵉᵈ ᵖᵒⁱⁿᵗˢ..... ˣᵈ..