Three resistors (10 Ohm, 10 Ohm and 15 Ohm) are connected together as shown in t

Question

Three resistors (10 Ohm, 10 Ohm and 15 Ohm) are connected together as shown in the right figure. What is the equivalent resistance of this resistor network? (A) R_eq = 35 Ohm (B) R_eq = 20 Ohm (C) R_eq = 16 Ohm (D) R_eq = 17 Ohm (E) R_eq = 5 Ohm A conducting bar ab is moving on a metal rail in a uniform magnetic field B, which direction " is into the page. Which of the following statements is correct? (A) induced current direction is from a to b and the induced force direction is to the left (B) induced current direction is from a to b and the induced force direction is to the right (C) induced current direction is from b to a and the induced force direction is to the left (D) induced current direction is from b to a and the induced force direction is to the right

Explanation / Answer

2) here 15 ohms and 10 ohms are in parallel so their equivalent resistance is (15*10)/(15+10) = 6 ohms

now total equivalent resistance is 10 ohms + 6 ohms = 16 ohms

option C is the answer

3) induced current is counter clockwise and induced force direction is right

so option D i,e induced direction is from b to a and induced force direction is to the right

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