In the figure R₁ = 7.91, R2 = 23.72, and the ideal battery has emf = 12.1 V. (a) What is the magnitude of current i₁? (b) How much energy is dissipated by all four resistors in 0.666 min? E R₁ R₂ R₁₂ ww B R₁₂ www (a) Number 0.765 Units A (b) Number 370 Units J > >

In the figure R1 = 6.53 Q, R2 = 19.6 Q, and the ideal battery has emf ɛ = 11.0 V. (a) What is the magnitude of current iq? (b) How much energy is dissipated by all four resistors in 2.21 min? R R2 ww R R2 ww (a) Number i Units (b) Number i Units

In the figure R₁ = 4.320, R₂ = 13.00, and the ideal battery has emf ε = 13.8 V. (a) What is the magnitude of current i₁? (b) How much energy is dissipated by all four resistors in 2.45 min? 4 HE 8 R ww i₁ R₂ m R₁ (a) Number i (b) Number R₂ Units Units

In the figure R₁ = 5.240, R₂ = 15.702, and the ideal battery has emf ε = 13.4 V. (a) What is the magnitude of current i₁? (b) How much energy is dissipated by all four resistors in 1.03 min? ww 8 R₁ Units R₂ 41 www R₂ (a) Number i (b) Number i Rą Units

A solar cell generates a potential difference of 0.17 V when a 520 0 resistor is connected across it, and a potential difference of 0.25 V when a 940 resistor is substituted. What are the (a) internal resistance and (b) emf of the solar cell? (c) The area of the cell is 2.5 cm? and the rate per unit area at which it receives energy from light is 5.1 mW/cm². What is the efficiency of the cell for converting light energy to thermal energy in the 940 Q external resistor? (a) Number i Units (b) Number i Units (c) Number Units > >

In the figure R1 = 110 Q, R2 = R3 = 75.0 Q, R4 = 110 Q, and the ideal battery has emf ɛ = 6.00 V. (a) What is the equivalent resistance? What is i in (b) resistance 1, (c) resistance 2, (d) resistance 3, and (e) resistance 4? R R. R R (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units (e) Number i Units

A current of I= 4.7 A passes through the circuit shown, where R= 46 N. (a) In terms of R, I, and numeric values, write an expression for the voltage of the source, V. 3R 5R ww ww (b) What is the voltage, V in volts? 2R 6R 2R7R ww 10R 5R 多

A cell of em.f. 2V and external resistance 0.5 Q is connected across a resistor (R). The current that flows is same as that, when a cell of e.m.f. 1.5 V and external resistance 0.3 Q is connected across the same resistor. Then R=03Q (b) R=0.60 R=05Q (d) R=0.75 92

In the figure R₁ = 5.760, R₂ = 17.30, and the ideal battery has emf ε = 13.4 V. (a) What is the magnitude of current i₁? (b) How much energy is dissipated by all four resistors in 1.38 min? 8 R9 i1 R₂ mi (a) Number ww R₁ i (b) Number i Rą Units Units

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