Home
Class 10
PHYSICS
Three 2 Omega reistors , A,B and C, are ...

Three `2 Omega` reistors , `A,B and C`, are connected as shown in (Fig. 3.44). Each of them dissipates energy and can withstand a maximum current that can flow through the three resistors ?
.

Text Solution

Verified by Experts

As `P = I^2 R, I = sqrt((P)/(R ))`
Thus, maximum current that can flow through `2 Omega` resistor (rating 18 W), `I = sqrt((18 W)/(2 Omega)) = 3 A`.
Since resistor `B (= 2 Omega)` and resistor `C(= 2 Omega)` are in parallel, and the current through their combination, which is in series with resistor `A(= 2 Omega)` is also `3 A`, current through `B and C` (having equal resistance and in parallel) `= (3 A)/(2) = 1.5 A`.
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    PRADEEP|Exercise (Exemplar)Long Answer|6 Videos

  • ELECTRICITY

    PRADEEP|Exercise (Additional)Very Short Answer|47 Videos

  • ELECTRICITY

    PRADEEP|Exercise NCERT Exercise|18 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    PRADEEP|Exercise Mock Test|21 Videos

Similar Questions

Explore conceptually related problems

Three 2 Omega resistors, A, B and C are connected as shown in figure. Each of them dissipates energy and can with stand a maximum power of 18 W without melting. Find the maximum current that can flow through the three resistors ?

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 4Omega in series with a combination of two resistors ( 8Omega each ) in parallel and a voltmeter across parallel combination. Each of them dissipate maximum energy and can withstand a maximum power of 16 W without melting. Find the maximum current that can flow through the three resistors.

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistance of 4 Omega in series with a combination of two resistors (8 Omega) in parallel and a voltmeter across the parallel combination. Each of them dissipate maximum energy and can withstand a maximum power of 16 W without melting. Find the maximum current that can flow through the three resistors.

Five resistors, each 3 Omega , are connected as shown in (fig. 3.23). Calculate the resistance between the points (a) A and b between the point C and D . .

Three 200 Omega resistors are connected as shown in figure. The maximum power that can be dissipated in any one of the resistor is 50 W. Find the total power in watts dissipated in the circuit for maximum voltage across the terminals A and B.

Three 10 Omega , 2 W resistors are connected as in Fig. 7.34 . The maximum possible voltage between points A and B without exceeding the power dissipation limits of any of the resistors is

Three resistances each of 3Omega are connected as shown in fig. the resultant resistance between A and F is

Three 200Omega resistors are connected as shown in figure. Any of these resistors breaks down if the rate of heat dissipation in it exceeds 50 W. Then, the maximum rate of total heat dissipation in the three resistors together is __________ W.

In the net work three identical capacitors are connected as shown. Each of them can withstand to a maximum 100 V potential difference. What is the maximum voltage that can be applied across A and B so that no capacitor gets spoiled. .