An electric lamp of 100 ?, a toaster of resistance 50 ?, and a water filter of resistance 500 ? are connected in parallel to a 220 V source.

Answers (1)

Given : R_1=100Omega ,R_2=50Omega ,R_3=500Omega

    R=Equivalent  resistance

    frac1R=frac1R_1+frac1R_2+frac1R_3 

Rightarrow frac1R=frac1100+frac150+frac1500

Rightarrow frac1R=frac5+10+1500=frac16500

Rightarrow R=frac50016=31.25Omega

By Ohm's law,

                   I=fracVR=frac22031.25=7.04A

Hence, the resistance of electric iron is 31.25 and current through it is 7.04A.

 

Most Viewed Questions

Preparation Products

Knockout CUET (Physics, Chemistry and Mathematics)

Complete Study Material based on Class 12th Syllabus, 10000+ Question Bank, Unlimited Chapter-Wise and Subject-Wise Mock Tests, Study Improvement Plan.

₹ 7999/- ₹ 4999/-
Buy Now
Knockout CUET (Physics, Chemistry and Biology)

Complete Study Material based on Class 12th Syllabus, 10000+ Question Bank, Unlimited Chapter-Wise and Subject-Wise Mock Tests, Study Improvement Plan.

₹ 7999/- ₹ 4999/-
Buy Now
Knockout JEE Main (Six Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Expert Mentorship, - Study Improvement Plan.

₹ 9999/- ₹ 8499/-
Buy Now
Knockout JEE Main (Nine Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Expert Mentorship, - Study Improvement Plan.

₹ 13999/- ₹ 12499/-
Buy Now
Knockout NEET (Six Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Expert Mentorship, - Study Improvement Plan.

₹ 9999/- ₹ 8499/-
Buy Now
Boost your Preparation for JEE Main with our Foundation Course
 
Exams
Articles
Questions