đề thi vật lý 9 kiểm tra 15
Chia sẻ bởi Nguyễn Thị Tuyết |
Ngày 14/10/2018 |
55
Chia sẻ tài liệu: đề thi vật lý 9 kiểm tra 15 thuộc Vật lí 9
Nội dung tài liệu:
Họ và tên :......................................
Lớp : ..............................................
Trường THCS Hòa Bình
Ngày…….tháng……năm 2016
Bài kiểm tra vật lí 9
Thời gian 15 phút
Đề bài
Cho mạch điện AB gồm có hai điện trở R1 và R2 mắc song song ; ampe kế A đo cường độ dòng điện trong mạch; ampe kế A1 đo cường độ dòng điện chạy qua R1.
1, Vẽ sơ đồ mạch điện.
2,Biết : R1= 6Ω; R2 = 10Ω; ampe kế A chỉ 1,2A. Hãy tính:
Hiệu điện thế của đoạn mạch
Số chỉ ampe kế A1
3, Giữ nguyên hiệu điện thế của đoạn mạch và mắc thêm vào đoạn mạch điện trở R3 sao cho R1// R2// R3 . Biết cường độ dòng điện trong mạch tăng thêm 0,3A, tính R3 ?
BÀI LÀM
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Lớp : ..............................................
Trường THCS Hòa Bình
Ngày…….tháng……năm 2016
Bài kiểm tra vật lí 9
Thời gian 15 phút
Đề bài
Cho mạch điện AB gồm có hai điện trở R1 và R2 mắc song song ; ampe kế A đo cường độ dòng điện trong mạch; ampe kế A1 đo cường độ dòng điện chạy qua R1.
1, Vẽ sơ đồ mạch điện.
2,Biết : R1= 6Ω; R2 = 10Ω; ampe kế A chỉ 1,2A. Hãy tính:
Hiệu điện thế của đoạn mạch
Số chỉ ampe kế A1
3, Giữ nguyên hiệu điện thế của đoạn mạch và mắc thêm vào đoạn mạch điện trở R3 sao cho R1// R2// R3 . Biết cường độ dòng điện trong mạch tăng thêm 0,3A, tính R3 ?
BÀI LÀM
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