Science, asked by aliabbas24, 5 months ago

The circuit diagram shows a wire of 5 ohm connected to a battery of 10 V, an ammeter, a voltmeter.. Find the reading of ammeter and voltmeter​

Answers

Answered by ItzSecretBoy01
2

Answer:

We use ohm's law to solve this problem. Since the incoming current is 4A, we say I=4A. The voltmeter reads a voltage drop of 20V across the resistor. This means that if we apply ohm's law on the resistor, we can say that V=I*R. Therefore, 20=4*R. This gives us that value of R to be 5 ohms.

This was the theoretical ideal case. Now, with non ideal meters, in the real world temperature increases and so the resistance also increases. Therefore, the final answer is C.

Answered by Anonymous
0

Answer:

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✤ Required Answer:

✒ GiveN:

Cost price of a fan = Rs. 1200

Gain % = 8 %

✒ To Find:

Selling price of the fan....?

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✤ How to solve?

For solving this question, Let's note down some important formulae:

Selling price = Cost price + Gain/Profit

And, Profit % = Profit/CP × 100

Or else, Direct formula,

\large{ \boxed{ \rm{SP = \frac{CP(100 + p\%)}{100} }}}

SP=

100

CP(100+p%)

☃️ So, Let's try both the formulae, and solve the question

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✤ Solution:

Method 1:

We have,

Cost price = Rs. 1200

Gain % = 8 %

Finding gain/profit,

➝ Gain % = Gain/CP × 100

➝ 8 = Gain/1200 × 100

➝ 8 = Gain/12

➝ Gain = Rs. 96

Finding Selling price,

➝ Selling price = Cost price + Gain

➝ Selling price = Rs. 1200 + Rs. 96

➝ Selling price = Rs. 1296

☀️ Selling price of the fan = Rs. 1296

Method 2:

By using shortcut formula,

➝ Selling price = Cost price(100 + Gain%)/100

➝ Selling price = 1200(100 + 8)/100

➝ Selling price = 12 × 108

➝ Selling price = Rs. 1296

☀️ Here also, SP of the fan = Rs. 1296 only.

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