Using Kirchoff\'s junction rule, sum of the currents going into the junction is

Question

Using Kirchoff's junction rule, sum of the currents going into the junction is equal to the sum of the currents coming out of the junction, if l_1 = 5A, l_2 =, if l_3 = 5A, if l_4 = 5A, the current through I_5 is a. 12A b. 9A c. 5A d. 7A How can you make a magnet temporarily lose its magnetism? A. By heating it B. By blowing on it C. By hitting it very hard D. Both a & c "The direction of the induced current is such that it opposes the changing magnetic flux. that has induced it." This is a. Lenz's law b. Snell's law c. Faraday's law d. Coulomb's law

Explanation / Answer

applying kirchoff junction rule

sum of current flowing towards the junction = sum of currents flowing away from junction

I1 + I5 = I2 + I4 + I3

5 + I5 = 7 + 5 + 5

I5 = 12 A

option (a)

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By heating and by hitting it very hard

option (D)

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Lenz's Law

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