A copper wire of resistance 4.0 and length 2.0 m isconnected to the two terminal

Question

A copper wire of resistance 4.0 and length 2.0 m isconnected to the two terminals of a battery. The currentthrough the wire is 0.3 A. (The battery has a negligible internalresistance.) a.) Find the emf of the battery b.) What is the charge that passes through the cross sectionof the wire each second? c.) What is the heat generated in the wire each second? A copper wire of resistance 4.0 and length 2.0 m isconnected to the two terminals of a battery. The currentthrough the wire is 0.3 A. (The battery has a negligible internalresistance.) a.) Find the emf of the battery b.) What is the charge that passes through the cross sectionof the wire each second? c.) What is the heat generated in the wire each second?

Explanation / Answer

Given Resistance of copper wire   R = 4 length of the wire   L = 2 m current through the wire    i = 0.3 A a)According to ohms law                   = i R                   = 0.3 * 4 =   1.2 V b) charge that passes through the cross section of the wireeach second                     q = i t                         = 0.3 -1 = 0.3 C c)   heat generayed in the wire eachsecond                    power   = I2 R                                 = 0.32 * 4 = 0.36 W

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.