1. A length of wire of resistance Ris connected across a battery with zero internal resistance. The wire is then cut in half and the two halves are connected in parallel. When the combination is reconnected across the battery, what happens to the resultant power dissipated and the current drawn from the battery? (A) (B) (C) (D) Power Doubles Quadruples Doubles Quadruples Current Doubles Doubles Quadruples Quadruples 2. In the electric circuit shown at right, the current through the 2.0 O resistor is 3.0 A. What is the approximate emf of the battery, assuming it is ideal? (A) 63 V (B) 51 V (C) 42 V (D) 36 V (E) 24 V 6.00 6,00

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Chapter1: Units, Trigonometry. And Vectors
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1. A length of wire of resistance Ris connected across a battery with zero internal
resistance. The wire is then cut in half and the two halves are connected in parallel. When the
combination is reconnected across the battery, what happens to the resultant power
dissipated and the current drawn from the battery?
Power
Current
(A)
Doubles
Doubles
(В)
Quadruples
Doubles
Quadruples
Quadruples
(C)
Doubles
(D)
Quadruples
2. In the electric circuit shown at right, the current through the 2.0 Q resistor is 3.0 A. What is
the approximate emf of the battery, assuming it is ideal?
(A) 63 V
(В) 51 V
6.00
(C) 42 V
(D) 36 V
(E) 24 V
Transcribed Image Text:1. A length of wire of resistance Ris connected across a battery with zero internal resistance. The wire is then cut in half and the two halves are connected in parallel. When the combination is reconnected across the battery, what happens to the resultant power dissipated and the current drawn from the battery? Power Current (A) Doubles Doubles (В) Quadruples Doubles Quadruples Quadruples (C) Doubles (D) Quadruples 2. In the electric circuit shown at right, the current through the 2.0 Q resistor is 3.0 A. What is the approximate emf of the battery, assuming it is ideal? (A) 63 V (В) 51 V 6.00 (C) 42 V (D) 36 V (E) 24 V
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