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- Check Your Understanding The voltage supplied to your house varies as V( t )= V max sin( 2ft ) If a resistor is connected across this voltage, will Ohm’s law V = IR still be valid?The current-versus-voltage behavior of a certain electrical device is shown in Figure OQ21.3. When the potential difference across the device is 2 V, what is its resistance? (a) 1 (b) 34 (c) 43 (d) undefined (e) none of those answersCheck Your Understanding The resistance between the two conductors of a coaxial cable depends on the resistivity of the material separating the two conductors, tire length of the cable and the inner and outer radius of the two conductor. If you are designing a coaxial cable, how does the resistance between the two conductors depend on these variables?
- ed on 12 V 6Q ΧΩ What is the equivalent resistance of the two resistors in parallel if X is 7? Answer: Next paWhat is the exact value of this resistor R= ohms Voltage 120.00 V CAVA LOGk 601 Dependatie perfe houghtful P Laptp 1,37 AQuestion 6) Figure shows a circuit that contains two batteries and two resistors. Determine the current I in the circuit. A single-loop circuit that contains two batteries and two resistors. 12 2 6.0 V ww- 8.0 Q 24 V SAMSUNG & 5 7 8 9. y u i 口
- 4 resistors are connected as shown in the figure. The total current passing through the circuit is 5A while the current, R ahs a resistance of 3 ohms, the voltage across R2 and R4 are 20V and 30V respectively and the current passing through R3 is 2A. determine the Total Voltage and Total Resistance of the circuit shown and all other unknowns. RI ww R3 R2A miliammeter has a resistance of 10N and has a range of 0.25 mA. How will you convert it into a voltmeter to read voltage upto 25 volt ?An electric razor has a resistance of 18 Ω and a c urrent o f 0.28 A . Calculate t h e potential drop acrossthe razor.
- The potential at the terminals of the battery falls from 9 V on open circuit to 6 volts when a resistorof 10 ohms is connected across its terminals. What is the internal resistance of the battery?A cell has e.m.fof 1.5V and internal resistance 1 ohm. It is connected to two resistors 2 On and 3 ohms in series. What will be potential difference across 3-ohm resistance? 0.5V 0.75V V 1 None of these 1.5VTwo identical resistors ® are connected in parallel and then wired in series to a 40 Ω resistor. If the total equivalent resistance is 55Ω, what is the value of R?