If a wire of resistance R is stretched uniformly so that itslength doubles, by what factor does the power dissipatedin the wire change, assuming it remains hooked up to thesame voltage source? Assume the wire’s volume and densityremain constant

When a 220 Volt potential difference is applied to a heater with a resistance of 20 Ω;a) The power of the heater?b) The energy consumed when working for 12 hours and when the kW-hour of electricity is 30 kuruş, the heater isHow many TL invoices will the work reveal?

Is it possible to connect a group of resistors of value R in such a waythat the equivalent resistance is less than R? If so, give a specificexample

The capacitance in the figure circuit shown is C-0.30µF,, the total resistance is 20kΩ and the fem battery is 12 V. Determine a) the time constant b) the maximum charge that the capacitor could acquire, c) thetime it takes for the load to reach 99% of that value, d) current I when the Q load is half its value maximum, e) the maximum current and f ) the Q load when current I is 0.20 of its maximum value.

In a þotentiomeleu expt emf of a cell as balanced, 150 cm on the botenliomelei wire When the celt "is shunted. by 10 ohm siesis lance., the balancing is g0 m Then find . by a length of inleinal vesis lana of cell.

(d) Finally, consider the following circuit constructed with both copper (blue) and nichrome (orange) wires. + Assume all wires in the circuit have a diameter of 1.024 mm. If the total length of copper wire is 25 cm, the total length of nichrome wire is 115 cm (this wire is coiled so the length is greater than it appears in the figure), and a voltage of 1.5 V is applied to the circuit, what current will flow? I = 0.0210 ХА

The RC charging circuit in a camera flash unit has a voltage source of 265 V and a capacitance of 126 uF. HINT (a) Find its resistance R (in ohms) if the capacitor charges to 90.0% of its final value in 17.2 s. 5.96E-4 (b) Find the average current (in A) delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.04 ms.

A capaci ts chaoge o at a petential btential f the mltage applied to vol differende ov. What happens applied to batle@y the is capacitor doubled beard buttons 02 Many Conputes key bonstracted of rapacitos. citoas. ade key is pushed dain, the soft morable plate and is compiessed. When a msulater bw the fined plate the key is plessed, what to heppens the bepocitance: e, @s. Two capacitas conducting.'Left plate of capacitoos aoe 企式 Sbattery capacitos 1 and the aght plate of capaci too 2 cennected to the thay peom an iso lated systom, that is initially anchanged are teominal of batteay S. and must continue zeh net cholge-Why to have the net chorge is メ ズ

Many important devices incorporate circuits in which capacitors are altermately charged ane discharged. These include heart pacemakers, flashing traffic lights, automobile turn signals Activity 11 atano In the circuit shown in the figure below, find o -A erti ni 0 VA oR (a) the current in resistor R;-) berlosen aesd episo 1otios1eit.omil (b) the resistance R; and (c) the unknown emf ɛ.uotio erli to upa emit sulsy is ww riobexelen 10 inslenoo emd erl 4,00 A fiuonio 0-A 1ol Instenco amit x 6.00 6.00 A ww 3.00 0 ot19s9 eli lsme ai eonslaleen ert oiup aeperlo R-C Circuits ema al1 abnopee ni ei 1 to linu erni vDup eierio 10tiosqeo er brns woll ot in and electronic flash units. Understanding what happens in such circuits is of great practica Importo ert nelle acdniu