26.18 in Fig. E26.7 find the reading of the Figure 126.7 idealized ammeter if th

Question

26.18 in Fig. E26.7 find the reading of the Figure 126.7 idealized ammeter if the battery has an 430 n iggekual resistance of 3.26 n 6.8 Three resistors having resis 25.0 V of 1.60 n, 2.40 n, and 4.80 n are connected in parallel to a 28.0-V bat- uery that has negligible internal rcsis. tance, Find (a) the equivalent resistance 5.0n of the combination; (b) the current in each resistor; (c) the total current through the battery; (d) the volt. age across each resistor (c) the power dissipated in each resistor. 3/2/2017 ton 198, na 82 31 aum ized to uso unta 13 2020 urc beyond the authonzo user ub senpt date represents a copy sht vici t on

Explanation / Answer

Resistors in parallel
R=1/(1/R1 + 1/R2 +1/R3)
1/(1/1.6+1/2.4+1/4.8)=4/5=0.8 Ohm

According toOhm's law I=V/R

For V=28 and R=1.6

I=28/1.6=17.5A

the total current
in the circuit is 28/0.8 = 35 A

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